package com.itheima.reggie.mapper;


import com.itheima.reggie.entity.ShoppingCart;
import org.apache.ibatis.annotations.*;

import java.util.List;

public interface ShoppingCartMapper {

    //查询购物车中当前菜品dishId或套餐的setmealId购物车数据
    ShoppingCart findByShoppingCart(ShoppingCart shoppingCart);

    //更新指定购物车菜数据数量,根据购物车主键更新数量
    @Update("update shopping_cart set number=#{number} where id=#{id}")
    Integer updateNumber(@Param("id") Long id, @Param("number") Integer number);

    //插入一条新的购物车数据
    @Insert("insert into shopping_cart values(null,#{name},#{image},#{userId},#{dishId},#{setmealId},#{dishFlavor},#{number},#{amount},#{createTime})")
    @Options(useGeneratedKeys = true,keyProperty ="id",keyColumn ="id")
    Integer save(ShoppingCart shoppingCart);



    //查询指定用户的购物车集合数据
    @Select("select *from shopping_cart where user_id=#{userId}")
    List<ShoppingCart> findAllByUserId(Long userId);


    //删除指定用户购物车数据
    @Delete("delete from shopping_cart where user_id=#{userId}")
    Integer deleteByUserId(Long userId);

}
